Poster Open Access
Among 88 nearby stars at d<20pc with lacking colours but
measured parallaxes in Gaia EDR3 we found two new close
(separations~3arcsec) common parallax and proper motion
(CPPM) companions. The companion of a nearby
(d=14.98pc) F1 star, HD 105452 B, was already imaged
with the Hubble Space Telescope and now confirmed with Gaia.
We classified it photometrically as M4 dwarf.
The other CPPM companion, SCR J1214-2345 B orbits an M4.5
dwarf at d=10.77pc and represents the faintest brown dwarf
discovery with Gaia. It was imaged in the
VISTA Hemisphere Survey and partly detected in the
near-infrared. Our photometric classification of
T1+-3 needs spectroscopic confirmation.